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From: dean@aoa.UUCP (Dean Wormell)
Newsgroups: net.graphics
Subject: Re: Image processing articles?
Message-ID: <274@aoa.UUCP>
Date: Wed, 28-Aug-85 09:15:56 EDT
Article-I.D.: aoa.274
Posted: Wed Aug 28 09:15:56 1985
Date-Received: Fri, 30-Aug-85 00:59:53 EDT
References: <301@ur-laser.uucp>
Reply-To: dean@aoa.UUCP (Dean Wormell)
Organization: Adaptive Optics Assoc., Cambridge, Mass. USA
Lines: 66
Keywords: Image processing, computer graphics

In article <301@ur-laser.uucp> nitin@ur-laser.uucp (Nitin Sampat) writes:
>So what happened to the 25-30 people who voted "yes" for the IP group?
>
>			{seismo,allegra}!rochester!ur-laser!nitin.uucp

I have sent follow-up articles, but at that time our news was not posting
properly...  In hopes of not being too late, here is a response to your
article dated July 12, 1985:

>  That brings up an
> intersting question..at what point do you start separating computer
> graphics from a field called image processing ? 
> 
> Image processing in a strict sense can be defined as the manipulation
> and analysis of images with the help of a computer to obtain a 
> desired result ?  

This is partially true, much of image processing involves scene analysis.
Scene analysis is usally done with high speed pre-processors (for real
time applications) or as you state with slower host computer for post-
processing of an aquired image(s).  Another image processing techniques
frequently used incorporate an optical pre-processor, either active or
passive (i.e. light values/modulators and/or spectral, spatial filters...).

> Is it reasonable to say, then, that graphics
> deals only with manipulation while IP involves more analysis ?

I feel graphics deals more with the creation of images.  IP also
includes image aquisition (image intensifiers, vidicons, 
detetector arrays, video signal processing and digitization).

> Or is computer graphics a branch of image processing ?

Computer graphics is often used to display aquired and processed images.

> Even eyeglasses do some image processing i.e. they manipulate
> images to obtain a specific result.

Let's create net.optics :-).

> For all those wanting an Image processing group, let us first decide
> what image processing really means...is it just one of those technical
> jargons that we choose because it sounds "hi-tech", or are we going after 
> something specific ???
> 
> 					nitin@ur-laser.uucp
> 				{seismo,allegra}!rochester!ur-laser!nitin

To sum up, I feel there is a hardware difference between IP and CG.  
Most postings to .graphics relate to graphic terminals, graphic
software, and printer/plotters.  I do agree there should be some 
honest discussion/interest related to image aquisition, 
pre/post-processing, analog video signal processing, (not VCR, Beta, etc.)
vision systems and real-time scene analysis to warrant the creation of
net.image.

** These opinions are my own and do not necessarily reflect those of my
	employer **

		Dean Wormell
		...!{decvax,linus,ima,ihnp4}!bbncca!aoa!dean
-- 


		Dean Wormell
		...!{decvax,linus,ima,ihnp4}!bbncca!aoa!dean